Effects of Right and Left Cardiosympathetic Nerve Stimulation on Blood Flow in the Major Coronary Arteries of the Anaesthetized Dog

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Abstract
Left cardiac sympathetic nerve stimulation in anaesthetized open-chest dogs produced more pronounced flow changes in the left circumflex than in the anterior descending or right coronary arteries. Right cardiac sympathetic stimulation produced no consistent change in the distribution of flow among these vessels. These observations suggest that the left and right cardiac sympathetic nerve terminals differ in their ventricular myocardial distribution.